Spybot - Search & Destroy 1.4
Search your hard disk and Registry for threats to your security and privacy.

All-in-One Secretmaker 4.2.7
Avoid spyware, intruders, spam, banner ads, and pop-ups while protecting your privacy.

SpywareBlaster 3.5.1
Prevent spyware from being installed on your computer.

HijackThis 1.99.1
Scan the Registry and hard drive for spyware.

Microsoft Windows Defender beta 2
Remove spyware from your PC and prevent unwanted software from being installed without your knowledge.

ZoneAlarm 6.1.744
Protect your Internet connection from hackers and other security breaches.

Prevx Home 2.1
Stop attacks from Internet worms, Trojan horses, hackers, malicious spyware, and adware.

AVG Anti-Virus Free Edition 7.1.375
Protect your computer from viruses and malicious programs.

Avast Home Edition 4.7.827
Scan your computer for viruses, worms, and Trojan horses.

Pop-Up Stopper Free Edition 3.1.14
Eliminate pop-up windows without adjusting proxy settings.

Computer Security for the Rest of Us
The Network Cops presents this informative information about computer security and how to protect yourself against various threats and vulnerabilities.